US2913320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire check
Assignee: Selas Corp of America
•
Filing: 1956-09-07
•
Granted: 1959-11-17
•
Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Williams John Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:15
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/82; F23D14/825; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A FIRECHECK INCLUDING A BODY HAVING A STRAIGHT PASSAGE THROUGH WHICH A FUEL MIXING FLOWS, SAID PASSAGE BEING PROVIDED ALONG ITS LENGTH WITH A PARTITION HAVING FORMED THEREON A PAIR OF ANNULAR AND OPPOSED VALVES SEATS, A SCREEN ACROSS SAID PASSAGE DOWNSTREAM OF SAID VALVE SEATS, A ROD EXTENDING AXIALLY OF SAID PASSAGE THROUGH SAID SCREEN AND VALVE SEATS, A FIRST VALVE BEING SLIDABLE ON SAID ROD BETWEEN SAID PARTITION AND SCREEN AND BEING BIASED IN ONE DIRECTION TOWARD THE ONE OF SAID VALVE SEATS FACING SAID SCREEN AND BEING ADAPTED TO BE OPENED BY FLOW OF MIXTURE THROUGH SAID PASSAGE, A SECOND VALVE ON SAID ROD AND MOVABLE THEREWITH, MEANS TO BIAS SAID ROD IN THE OPPOSITE DIRECTION TO MOVE SAID SECOND VALVE AGAINST THE OTHER OF SAID PAIR OF VALVE SEATS, AND TEMPERATURE RESPONSIVE MEANS DOWNSTREAM OF SAID SCREEN TO HOLD SAID ROD IN VALVE OPEN POSITION.
Claim 2
Dependent Claim
149 words
A FIRECHECK INCLUDING A BODY HAVING A STRAIGHT PASSAGE THROUGH WHICH A FUEL MIXING FLOWS, SAID PASSAGE BEING PROVIDED ALONG ITS LENGTH WITH A PARTITION HAVING FORMED THEREON A PAIR OF ANNULAR AND OPPOSED VALVES SEATS, A SCREEN ACROSS SAID PASSAGE DOWNSTREAM OF SAID VALVE SEATS, A ROD EXTENDING AXIALLY OF SAID PASSAGE THROUGH SAID SCREEN AND VALVE SEATS, A FIRST VALVE BEING SLIDABLE ON SAID ROD BETWEEN SAID PARTITION AND SCREEN AND BEING BIASED IN ONE DIRECTION TOWARD THE ONE OF SAID VALVE SEATS FACING SAID SCREEN AND BEING ADAPTED TO BE OPENED BY FLOW OF MIXTURE THROUGH SAID PASSAGE, A SECOND VALVE ON SAID ROD AND MOVABLE THEREWITH, MEANS TO BIAS SAID ROD IN THE OPPOSITE DIRECTION TO MOVE SAID SECOND VALVE AGAINST THE OTHER OF SAID PAIR OF VALVE SEATS, AND TEMPERATURE RESPONSIVE MEANS DOWNSTREAM OF SAID SCREEN TO HOLD SAID ROD IN VALVE OPEN POSITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |